user
Given the following Python code, what will be the output?

def sum_digits(x):
y = 0
for i in range(len(str(x))):
y += int(str(x)[i])
return y


assistant
The output of this code is the sum of the digits of the input x. For example, if the input is 1234, then the output will be 10 (1+2+3+4).